bbb3990a0f
By storing only the four corners, we can save the object overhead of an array and 4 float elements per sprite. This results in savings of around 5 MiB to store these coordinates.
78 lines
2.0 KiB
C#
78 lines
2.0 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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using System.Drawing;
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namespace OpenRA.Graphics
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{
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public class Sprite
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{
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public readonly Rectangle bounds;
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public readonly Sheet sheet;
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public readonly BlendMode blendMode;
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public readonly TextureChannel channel;
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public readonly float2 size;
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public readonly float2 offset;
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public readonly float2 fractionalOffset;
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readonly float top, left, bottom, right;
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public Sprite(Sheet sheet, Rectangle bounds, TextureChannel channel)
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: this(sheet, bounds, float2.Zero, channel, BlendMode.Alpha) {}
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public Sprite(Sheet sheet, Rectangle bounds, TextureChannel channel, BlendMode blendMode)
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: this(sheet, bounds, float2.Zero, channel, blendMode) {}
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public Sprite(Sheet sheet, Rectangle bounds, float2 offset, TextureChannel channel, BlendMode blendMode)
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{
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this.sheet = sheet;
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this.bounds = bounds;
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this.offset = offset;
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this.channel = channel;
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this.size = new float2(bounds.Size);
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this.blendMode = blendMode;
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this.fractionalOffset = offset / this.size;
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left = (float)(bounds.Left) / sheet.Size.Width;
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top = (float)(bounds.Top) / sheet.Size.Height;
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right = (float)(bounds.Right) / sheet.Size.Width;
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bottom = (float)(bounds.Bottom) / sheet.Size.Height;
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}
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public float2 TopLeftTextureCoords
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{
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get { return new float2(left, top); }
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}
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public float2 TopRightTextureCoords
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{
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get { return new float2(right, top); }
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}
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public float2 BottomLeftTextureCoords
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{
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get { return new float2(left, bottom); }
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}
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public float2 BottomRightTextureCoords
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{
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get { return new float2(right, bottom); }
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}
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}
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public enum TextureChannel
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{
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Red = 0,
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Green = 1,
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Blue = 2,
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Alpha = 3,
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}
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}
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